/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

package org.apache.druid.collections.bitmap;

import org.apache.druid.collections.IntSetTestUtility;
import org.junit.Assert;
import org.junit.Test;
import org.roaringbitmap.BatchIterator;

import java.util.BitSet;

public class BatchIteratorAdapterTest
{
  @Test
  public void advanceIfNeeded()
  {
    BitSet simpleBitSet = IntSetTestUtility.createSimpleBitSet(IntSetTestUtility.getSetBits());
    WrappedBitSetBitmap bitSetBitmap = new WrappedBitSetBitmap(simpleBitSet);
    BatchIterator batchIterator = bitSetBitmap.batchIterator();
    batchIterator.advanceIfNeeded(4);
    int[] batch = new int[3];
    batchIterator.nextBatch(batch);
    Assert.assertArrayEquals(new int[]{5, 8, 13}, batch);
  }
}
